• 4 min read
Building Design Tokens at Scale: Lessons from the Trenches
A practical guide to implementing and maintaining design tokens across large-scale design systems, with real-world examples and pitfalls to avoid.
I build interfaces that work
Hey, I'm Seán — a front-end engineer who's spent the last decade making software that's simple , accessible , and delightful to use.
RECENT WRITING
Thoughts on frontend development, design systems, and accessibility
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Component API Design: The Art of Developer-Friendly Interfaces
Exploring principles and patterns for designing component APIs that are intuitive, flexible, and maintainable in modern component-based frameworks.
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Accessible Form Validation: Beyond Red Borders and Error Messages
A comprehensive guide to building form validation that works for everyone, including screen reader users, keyboard navigators, and users with cognitive disabilities.
• 6 min read
CSS Container Queries: The Layout Revolution We've Been Waiting For
How CSS container queries fundamentally change the way we build responsive components, enabling truly modular design systems that adapt to their context.
• 7 min read
Atomic Design in Modern Frontend: What Still Works and What Doesn't
A critical look at Brad Frost's Atomic Design methodology through the lens of modern component-based frameworks and design systems.